spectrum
Pronunciation
[change]Noun
[change]![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Spectrum4websiteEval.png/300px-Spectrum4websiteEval.png)
- A range.
- Specifically, a range of colors representing light of various frequencies.
- (chemistry) The pattern of absorption or emission of radiation that is made by a substance when it is put in contact with an energy such as radiation, heat, electricity, etc.